Kutanga, zvinhu zvikuru zvinokanganisa maitiro ekurapa
Mary pipe zvidimbu zvinobata nehuwandu hwakakodzera nekuda kwehuwandu hwayo hwemetamorphism chinhu chinoda kutetepa, uye nekudaro zvakanyanya kuoma kudzikamisa kupfuura ductile iron.Izvi zvinoda kuti maitiro akakodzera anofanirwa kuedza kuita kushoma kushanduka.Kurapa mhedzisiro yeinogoneka simbi pombi fittings hombe process zvinhu zvinonyanya zvinotevera zvinhu.
1, iyo sarufa yemukati yesimbi yekutanga inopisa
Elemental sulfur kushandiswa kuderera.Iine simba rakasimba resimbi inopisa sarufa uye yakakwira magnesium, cerium, calcium, kune yakawanda modifier inoiswa mu slag, nekudaro ichideredza kugona kukonzeresa kuparara kwekurapa kusingabudiriri.Naizvozvo, mukugadzirwa kwesimbi inokwenenzverwa pombi fittings inofanira kuedza kushandisa yakaderera sarufa-ine yenguruve iron uye coke.Mamiriro ezvinhu, tora matanho ekutanga e desulphurization inobatsira.Izvi hazvireve kuti nesarufa yakakwirira yesimbi yakanyungudutswa haigone kugadziridzwa inogadzika pombi fittings.Mafekitori mazhinji emumba nekune dzimwe nyika ane sulfur yemukati inosvika 0.06-0.08% yesimbi inopisa cupola inogona kugadzika kugadzirwa inogoneka yesimbi pombi fittings, asi kuderera kweiyo alloy kuti ishandiswe mune imwe yakawanda.Ruzivo pamusoro pezvakaitika ne 0.07-0.13% sulfur inopisa simbi kugadzirwa kwe compacted graphite cast iron iyo pasi pemamwe mamiriro, senge titanium kuwedzera chiyero chekuita kubva mukushandiswa kweanti-bhora mhedzisiro yesarufa.Zvakadaro, huwandu hwesarufa hwakagadzika kugadzirisa malleable iron pombi fittings zvinodiwa.
2, tembiricha yekugadzirisa yesimbi yakanyungudutswa
Kana iyo yakanyungudutswa yesimbi yakaderera tembiricha kurapwa Gao aive nechakanyanya kukanganisa pakunyura mwero weiyo alloy, kunyanya magnesium-yakavakirwa vermicularizing zvakatonyanya.The yakakwirira tembiricha, zvikuru chisimba kufashaira magnesium gasification, uchipfuta zvishoma, vamwe sezvo yakaderera sezvinobvira kuitira kuti processing tembiricha uyewo.Gwaro rinotsanangura kana uchishandisa magnesium titanium composite modifier processing inogoneka iron pombi fittings, mhedzisiro yekusiyana kwekushisa kwekurapa pakubudirira kwekurapa.Kugadziridza pa1400 ℃, honye-kunge graphite mune anopfuura 95%, bhora kashoma;pa1280 ℃ kurapwa, inopfuura hafu yemagirafu nodules.Alloy huwandu hwakafanana, tembiricha yekugadziriswa kweiyo yakakura inoonekwa yekunyudza mwero.
Mukugadzirwa chaiko, tembiricha inofanirwa kutariswa kuti itarise maitiro ekukanda kudira tembiricha zvinodiwa.Zvisinei, tembiricha yekugadzira inofanira kunge yakagadzikana sezvinobvira, kana kushanduka kwekushisa kwakakura, huwandu hunofanira kugadziriswa alloy, zvikasadaro zvakaoma kuve nechokwadi chehutano hwekurapa.
Kashoma pasi-based vermicularizing, tembiricha yekugadziridza yakakwira Zvakanaka, tembiricha yakadzikira haisi nyore kunyangwe, isina kana aloy yakanyungudika zvizere, zvichikanganisa maitiro ekurapa.
3. Kugadzirisa mabasa
Sezvo iyo inokambaira maitiro nekuda kwekuchinja-chinja kwemhinduro kwakakanganisika, nekudaro zvinoda kuvhiyiwa kunorayirwa kunyatsoita.Kufanana kweiyo alloy kuumbwa, alloy inovhara kesi, huwandu uye iron alloys, slag slag uye mamwe matanho, senge ane mhedzisiro yakananga pamhedzisiro yekurapa.
Nguva yekutumira: Kubvumbi-29-2021